Einleitung in die Linux Shell

https://andreas-moor.de/einleitung-in-die-linux-shell/

Live a whole century, keep learning for a whole century, the Russians say.
Today I Learned™ how the Bourne-again shell catches bullets carefully
aimed at my foot.

I have a `bash' script, call it `baz', that post-processes text
produced by `foo-bar' (rest assured, though, that it remains within
all recognition).

Doing due diligence documentation-wise, I wanted to collect an example
of the end result into a comment in the same script.

So naive, I took myself for a ride:

$ foo-bar | baz | sed 's/^/### /' >> baz
bash: baz: Text file busy

(I expected that the shell would (try to) execute the appended lines,
so I commented them Just In Time. Running this with `strace' is left
as an exercise.)

PIPESTATUS was (0 141 1) and the output "softly and suddenly vanished away"...

--
"For the Snark was a Boojum, you see."

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